If you have ever had a challenge at 360 Voice ruined by a cheater, or if you ever wondered who the top Gamerscore in the world really was (you know, the person that didn't cheat to get there), Microsoft has delivered swift and terrible justice and made the world a better place for the rest of us. They have reset all of the Gamerscores of the known cheaters to zero and made it so that they can't get any of the previous achievements they used to cheat. Then can earn new points with new games, however.

Check out the full story at the Gamerscore Blog.

You can also check out my article on Gamerscore cheating here The Dark Side of Achievements.